Nondeciduous placenta
[医] 无蜕膜胎盘
🧩 词语组成解析
不脱落的, 不落叶的
placenta
[plə'sentə]
n. 胎盘，胎座;
🗣️ 情景例句
Bye.
再见。
The tongue ever turns to the aching teeth.
舌头总是碰着疼牙。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。